The invention belongs to the technical field of electro-hydraulic retarders, in particular to a front electro-hydraulic retarder structure of an automobile gearbox, and provides the following scheme that the front electro-hydraulic retarder structure comprises a transmission shaft, a rotor, a stator and a coil, the transmission shaft is rotationally connected to the middle position between the two sides of the stator, and the rotor is fixed to the middle position, located in the stator, of the outer wall of the transmission shaft; the rotor is arranged to be of a double-salient-pole structure, the coil is fixed to the position, located in the middle of the rotor, in the stator, a surrounding liquid flow cavity is formed outside the shell of the stator, the top end and the bottom end of the liquid flow cavity are both connected with liquid flow pipes, and a circulation cavity is formed in the position, located in the middle of the stator, of the transmission shaft. Circulation liquid flow enters the middle position of the transmission shaft and the rotor, on one hand, the cooling and heat dissipation effect is improved through internal liquid introduction, and on the other hand, by means of the speed difference between flowing of the circulating liquid and rotation of the transmission shaft and the rotor, buffering and retarding of rotation of the transmission shaft and the rotor are improved through active liquid flow.

本发明属于电液缓速器技术领域，尤其是一种汽车变速箱前置电液缓速器结构，现提出以下方案，包括传动轴、转子、定子和线圈，所述传动轴转动连接于定子两侧之间的中间位置，且转子固定于传动轴外壁位于定子内的中间位置，所述转子设置成双凸极结构，且定子内位于转子的中间位置固定有线圈，所述定子的壳体外设置有环绕的液流腔，且液流腔的顶端和底端均连接有液流管，所述传动轴位于定子内的中间位置开设有流通腔。本发明使循环液流进入至传动轴和转子的中间位置，一方面通过内部通液而提高降温散热效果，另一方面利用循环液流动与传动轴和转子转动之间的速差，而利用主动液流提高对传动轴和转子的转动进行缓冲以及缓速。